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Brown DenseOperations
The Lower Smackover Brown Dense formation is an unconventional oil reservoir found in southern Arkansas and northern Louisiana. The formation ranges in vertical depths from 8,000 to 11,000 feet and appears to be laterally extensive over a large area ranging in thickness from 300 to 550 feet. Below is a map indicating the company’s general area of interest in the play.
Brown Dense The Lower Smackover Brown Dense formation is an Upper Jurassic age, kerogen-rich carbonate source rock found across the Gulf Coast region of the southern United States from Texas to Florida. The company extensively reviewed the Brown Dense across the region and has indications that the right mix of reservoir depth, thickness, porosity, matrix permeability, sealing formations, thermal maturity and oil characteristics are found in the area of Southern Arkansas and Northern Louisiana. This region of Arkansas and Louisiana has produced oil and gas from the Upper Smackover since the 1920s. The Brown Dense formation is the source rock for these Upper Smackover fields. It has the critical properties necessary to be a successful play and compares favorably to other productive oil plays in the United States. However, it has never been exploited with horizontal drilling technology until now.

As of December 31, 2014, Southwestern held approximately 304,371 net acres in the area at an average cost of $831 per acre. Southwestern’s leases have an approximate 81% average net revenue interest and an average primary lease term of approximately three years, which may be extended for approximately three to four additional years. As of December 31, 2014, Southwestern had drilled 14 operated wells in the area, six of which were currently producing. Late in 2014, Southwestern acquired 75 miles of 3-D seismic data and is currently in the process of analyzing that data and the results to date.

Last Updated on 06/04/2015
304,371 net acres (12/31/2014)